cic-internal-integration/apps/cic-ussd/cic_ussd/processor/menu.py

545 lines
25 KiB
Python
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# standard imports
import json
import logging
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from datetime import datetime, timedelta
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# external imports
import i18n.config
from cic_types.condiments import MetadataPointer
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# local imports
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from cic_ussd.account.balance import (calculate_available_balance,
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get_account_tokens_balance,
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get_adjusted_balance,
get_balances,
get_cached_adjusted_balance,
get_cached_available_balance)
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from cic_ussd.account.chain import Chain
from cic_ussd.account.metadata import get_cached_preferred_language
from cic_ussd.account.statement import (
get_cached_statement,
parse_statement_transactions,
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query_statement)
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from cic_ussd.account.tokens import (create_account_tokens_list,
get_active_token_symbol,
get_cached_token_data,
get_cached_token_symbol_list,
get_cached_token_data_list,
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parse_token_list)
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from cic_ussd.account.transaction import from_wei, to_wei
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from cic_ussd.cache import cache_data_key, cache_data, get_cached_data
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from cic_ussd.db.models.account import Account
from cic_ussd.metadata import PersonMetadata
from cic_ussd.phone_number import Support
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from cic_ussd.processor.poller import wait_for_session_data
from cic_ussd.processor.util import parse_person_metadata, ussd_menu_list
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from cic_ussd.session.ussd_session import save_session_data
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from cic_ussd.state_machine.logic.language import preferred_langauge_from_selection
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from cic_ussd.translation import translation_for
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from sqlalchemy.orm.session import Session
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logg = logging.getLogger(__file__)
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class MenuProcessor:
def __init__(self, account: Account, display_key: str, menu_name: str, session: Session, ussd_session: dict):
self.account = account
self.display_key = display_key
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if account:
self.identifier = bytes.fromhex(self.account.blockchain_address)
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self.menu_name = menu_name
self.session = session
self.ussd_session = ussd_session
def account_balances(self) -> str:
"""
:return:
:rtype:
"""
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adjusted_balance = get_cached_adjusted_balance(self.identifier)
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token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
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preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
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with_available_balance = f'{self.display_key}.available_balance'
with_fees = f'{self.display_key}.with_fees'
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decimals = token_data.get('decimals')
available_balance = get_cached_available_balance(decimals, [self.identifier, token_symbol.encode('utf-8')])
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if not adjusted_balance:
return translation_for(key=with_available_balance,
preferred_language=preferred_language,
available_balance=available_balance,
token_symbol=token_symbol)
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adjusted_balance = json.loads(adjusted_balance)
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tax_wei = to_wei(decimals, int(available_balance)) - int(adjusted_balance)
tax = from_wei(decimals, int(tax_wei))
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return translation_for(key=with_fees,
preferred_language=preferred_language,
available_balance=available_balance,
tax=tax,
token_symbol=token_symbol)
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def account_statement(self) -> str:
"""
:return:
:rtype:
"""
cached_statement = get_cached_statement(self.account.blockchain_address)
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preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
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statement_list = []
if cached_statement:
statement_list = parse_statement_transactions(statement=json.loads(cached_statement))
fallback = translation_for('helpers.no_transaction_history', preferred_language)
transaction_sets = ussd_menu_list(fallback=fallback, menu_list=statement_list, split=3)
if self.display_key == 'ussd.first_transaction_set':
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return translation_for(
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self.display_key, preferred_language, first_transaction_set=transaction_sets[0]
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)
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if self.display_key == 'ussd.middle_transaction_set':
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return translation_for(
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self.display_key, preferred_language, middle_transaction_set=transaction_sets[1]
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)
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if self.display_key == 'ussd.last_transaction_set':
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return translation_for(
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self.display_key, preferred_language, last_transaction_set=transaction_sets[2]
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)
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def add_guardian_pin_authorization(self):
guardian_information = self.guardian_metadata()
return self.pin_authorization(guardian_information=guardian_information)
def guardian_list(self):
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
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set_guardians = self.account.get_guardians()[:3]
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if set_guardians:
guardians_list = ''
guardians_list_header = translation_for('helpers.guardians_list_header', preferred_language)
for phone_number in set_guardians:
guardian = Account.get_by_phone_number(phone_number, self.session)
guardian_information = guardian.standard_metadata_id()
guardians_list += f'{guardian_information}\n'
guardians_list = guardians_list_header + '\n' + guardians_list
else:
guardians_list = translation_for('helpers.no_guardians_list', preferred_language)
return translation_for(self.display_key, preferred_language, guardians_list=guardians_list)
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def account_tokens(self) -> str:
cached_token_data_list = get_cached_token_data_list(self.account.blockchain_address)
token_data_list = parse_token_list(cached_token_data_list)
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preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
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fallback = translation_for('helpers.no_tokens_list', preferred_language)
token_list_sets = ussd_menu_list(fallback=fallback, menu_list=token_data_list, split=3)
data = {
'account_tokens_list': cached_token_data_list
}
save_session_data(data=data, queue='cic-ussd', session=self.session, ussd_session=self.ussd_session)
if self.display_key == 'ussd.first_account_tokens_set':
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return translation_for(
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self.display_key, preferred_language, first_account_tokens_set=token_list_sets[0]
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)
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if self.display_key == 'ussd.middle_account_tokens_set':
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return translation_for(
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self.display_key, preferred_language, middle_account_tokens_set=token_list_sets[1]
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)
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if self.display_key == 'ussd.last_account_tokens_set':
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return translation_for(
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self.display_key, preferred_language, last_account_tokens_set=token_list_sets[2]
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)
def help(self) -> str:
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preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key, preferred_language, support_phone=Support.phone_number)
def person_metadata(self) -> str:
"""
:return:
:rtype:
"""
person_metadata = PersonMetadata(self.identifier)
cached_person_metadata = person_metadata.get_cached_metadata()
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
if cached_person_metadata:
return parse_person_metadata(cached_person_metadata, self.display_key, preferred_language)
absent = translation_for('helpers.not_provided', preferred_language)
return translation_for(
self.display_key,
preferred_language,
full_name=absent,
gender=absent,
age=absent,
location=absent,
products=absent
)
def pin_authorization(self, **kwargs) -> str:
"""
:param kwargs:
:type kwargs:
:return:
:rtype:
"""
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
if self.account.failed_pin_attempts == 0:
return translation_for(f'{self.display_key}.first', preferred_language, **kwargs)
remaining_attempts = 3
remaining_attempts -= self.account.failed_pin_attempts
retry_pin_entry = translation_for(
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'ussd.retry_pin_entry', preferred_language, remaining_attempts=remaining_attempts
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)
return translation_for(
f'{self.display_key}.retry', preferred_language, retry_pin_entry=retry_pin_entry
)
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def guarded_account_metadata(self):
guarded_account_phone_number = self.ussd_session.get('data').get('guarded_account_phone_number')
guarded_account = Account.get_by_phone_number(guarded_account_phone_number, self.session)
return guarded_account.standard_metadata_id()
def guardian_metadata(self):
guardian_phone_number = self.ussd_session.get('data').get('guardian_phone_number')
guardian = Account.get_by_phone_number(guardian_phone_number, self.session)
return guardian.standard_metadata_id()
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def language(self):
key = cache_data_key('system:languages'.encode('utf-8'), MetadataPointer.NONE)
cached_system_languages = get_cached_data(key)
language_list: list = json.loads(cached_system_languages)
if self.account:
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
else:
preferred_language = i18n.config.get('fallback')
fallback = translation_for('helpers.no_language_list', preferred_language)
language_list_sets = ussd_menu_list(fallback=fallback, menu_list=language_list, split=3)
if self.display_key in ['ussd.initial_language_selection', 'ussd.select_preferred_language']:
return translation_for(
self.display_key, preferred_language, first_language_set=language_list_sets[0]
)
if 'middle_language_set' in self.display_key:
return translation_for(
self.display_key, preferred_language, middle_language_set=language_list_sets[1]
)
if 'last_language_set' in self.display_key:
return translation_for(
self.display_key, preferred_language, last_language_set=language_list_sets[2]
)
def account_creation_prompt(self):
preferred_language = preferred_langauge_from_selection(self.ussd_session.get('user_input'))
return translation_for(self.display_key, preferred_language)
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def reset_guarded_pin_authorization(self):
guarded_account_information = self.guarded_account_metadata()
return self.pin_authorization(guarded_account_information=guarded_account_information)
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def start_menu(self):
"""
:return:
:rtype:
"""
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chain_str = Chain.spec.__str__()
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token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
decimals = token_data.get('decimals')
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blockchain_address = self.account.blockchain_address
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balances = get_balances(blockchain_address, chain_str, token_symbol, False)[0]
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key = cache_data_key([self.identifier, token_symbol.encode('utf-8')], MetadataPointer.BALANCES)
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cache_data(key, json.dumps(balances))
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available_balance = calculate_available_balance(balances, decimals)
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now = datetime.now()
if (now - self.account.created).days >= 30:
if available_balance <= 0:
logg.info(f'Not retrieving adjusted balance, available balance: {available_balance} is insufficient.')
else:
timestamp = int((now - timedelta(30)).timestamp())
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adjusted_balance = get_adjusted_balance(to_wei(decimals, int(available_balance)), chain_str, timestamp, token_symbol)
key = cache_data_key([self.identifier, token_symbol.encode('utf-8')], MetadataPointer.BALANCES_ADJUSTED)
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cache_data(key, json.dumps(adjusted_balance))
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query_statement(blockchain_address)
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token_symbols_list = get_cached_token_symbol_list(blockchain_address)
get_account_tokens_balance(blockchain_address, chain_str, token_symbols_list)
create_account_tokens_list(blockchain_address)
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preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(
self.display_key, preferred_language, account_balance=available_balance, account_token_name=token_symbol
)
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def token_selection_pin_authorization(self) -> str:
"""
:return:
:rtype:
"""
selected_token = self.ussd_session.get('data').get('selected_token')
token_name = selected_token.get('name')
token_symbol = selected_token.get('symbol')
token_issuer = selected_token.get('issuer')
token_contact = selected_token.get('contact')
token_location = selected_token.get('location')
token_data = f'{token_name} ({token_symbol})\n{token_issuer}\n{token_contact}\n{token_location}\n'
return self.pin_authorization(token_data=token_data)
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def transaction_pin_authorization(self) -> str:
"""
:return:
:rtype:
"""
recipient_phone_number = self.ussd_session.get('data').get('recipient_phone_number')
recipient = Account.get_by_phone_number(recipient_phone_number, self.session)
tx_recipient_information = recipient.standard_metadata_id()
tx_sender_information = self.account.standard_metadata_id()
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token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
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user_input = self.ussd_session.get('data').get('transaction_amount')
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decimals = token_data.get('decimals')
transaction_amount = to_wei(decimals=decimals, value=int(user_input))
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return self.pin_authorization(
recipient_information=tx_recipient_information,
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transaction_amount=from_wei(decimals, transaction_amount),
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token_symbol=token_symbol,
sender_information=tx_sender_information
)
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def exit_guardian_addition_success(self) -> str:
guardian_information = self.guardian_metadata()
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key,
preferred_language,
guardian_information=guardian_information)
def exit_guardian_removal_success(self):
guardian_information = self.guardian_metadata()
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key,
preferred_language,
guardian_information=guardian_information)
def exit_invalid_guardian_addition(self):
failure_reason = self.ussd_session.get('data').get('failure_reason')
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key, preferred_language, error_exit=failure_reason)
def exit_invalid_guardian_removal(self):
failure_reason = self.ussd_session.get('data').get('failure_reason')
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key, preferred_language, error_exit=failure_reason)
def exit_pin_reset_initiated_success(self):
guarded_account_information = self.guarded_account_metadata()
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key,
preferred_language,
guarded_account_information=guarded_account_information)
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def exit_insufficient_balance(self):
"""
:return:
:rtype:
"""
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
session_data = self.ussd_session.get('data')
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token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
decimals = token_data.get('decimals')
available_balance = get_cached_available_balance(decimals, [self.identifier, token_symbol.encode('utf-8')])
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transaction_amount = session_data.get('transaction_amount')
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transaction_amount = to_wei(decimals=decimals, value=int(transaction_amount))
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recipient_phone_number = self.ussd_session.get('data').get('recipient_phone_number')
recipient = Account.get_by_phone_number(recipient_phone_number, self.session)
tx_recipient_information = recipient.standard_metadata_id()
return translation_for(
self.display_key,
preferred_language,
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amount=from_wei(decimals, transaction_amount),
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token_symbol=token_symbol,
recipient_information=tx_recipient_information,
token_balance=available_balance
)
def exit_invalid_menu_option(self):
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if self.account:
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
else:
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preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key, preferred_language, support_phone=Support.phone_number)
def exit_pin_blocked(self):
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
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return translation_for('ussd.exit_pin_blocked', preferred_language, support_phone=Support.phone_number)
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def exit_successful_token_selection(self) -> str:
selected_token = self.ussd_session.get('data').get('selected_token')
token_symbol = selected_token.get('symbol')
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key, preferred_language, token_symbol=token_symbol)
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def exit_successful_transaction(self):
"""
:return:
:rtype:
"""
amount = int(self.ussd_session.get('data').get('transaction_amount'))
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
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token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
decimals = token_data.get('decimals')
transaction_amount = to_wei(decimals, amount)
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recipient_phone_number = self.ussd_session.get('data').get('recipient_phone_number')
recipient = Account.get_by_phone_number(phone_number=recipient_phone_number, session=self.session)
tx_recipient_information = recipient.standard_metadata_id()
tx_sender_information = self.account.standard_metadata_id()
return translation_for(
self.display_key,
preferred_language,
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transaction_amount=from_wei(decimals, transaction_amount),
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token_symbol=token_symbol,
recipient_information=tx_recipient_information,
sender_information=tx_sender_information
)
def response(account: Account, display_key: str, menu_name: str, session: Session, ussd_session: dict) -> str:
"""This function extracts the appropriate session data based on the current menu name. It then inserts them as
keywords in the i18n function.
:param account: The account in a running USSD session.
:type account: Account
:param display_key: The path in the translation files defining an appropriate ussd response
:type display_key: str
:param menu_name: The name by which a specific menu can be identified.
:type menu_name: str
:param session:
:type session:
:param ussd_session: A JSON serialized in-memory ussd session object
:type ussd_session: dict
:return: A string value corresponding the ussd menu's text value.
:rtype: str
"""
menu_processor = MenuProcessor(account, display_key, menu_name, session, ussd_session)
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if menu_name == 'account_creation_prompt':
return menu_processor.account_creation_prompt()
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if menu_name == 'start':
return menu_processor.start_menu()
if menu_name == 'help':
return menu_processor.help()
if menu_name == 'transaction_pin_authorization':
return menu_processor.transaction_pin_authorization()
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if menu_name == 'token_selection_pin_authorization':
return menu_processor.token_selection_pin_authorization()
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if menu_name == 'exit_insufficient_balance':
return menu_processor.exit_insufficient_balance()
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if menu_name == 'exit_invalid_guardian_addition':
return menu_processor.exit_invalid_guardian_addition()
if menu_name == 'exit_invalid_guardian_removal':
return menu_processor.exit_invalid_guardian_removal()
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if menu_name == 'exit_successful_transaction':
return menu_processor.exit_successful_transaction()
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if menu_name == 'exit_guardian_addition_success':
return menu_processor.exit_guardian_addition_success()
if menu_name == 'exit_guardian_removal_success':
return menu_processor.exit_guardian_removal_success()
if menu_name == 'exit_pin_reset_initiated_success':
return menu_processor.exit_pin_reset_initiated_success()
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if menu_name == 'account_balances':
return menu_processor.account_balances()
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if menu_name == 'guardian_list':
return menu_processor.guardian_list()
if menu_name == 'add_guardian_pin_authorization':
return menu_processor.add_guardian_pin_authorization()
if menu_name == 'reset_guarded_pin_authorization':
return menu_processor.reset_guarded_pin_authorization()
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if 'pin_authorization' in menu_name:
return menu_processor.pin_authorization()
if 'enter_current_pin' in menu_name:
return menu_processor.pin_authorization()
if 'transaction_set' in menu_name:
return menu_processor.account_statement()
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if 'account_tokens_set' in menu_name:
return menu_processor.account_tokens()
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if 'language' in menu_name:
return menu_processor.language()
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if menu_name == 'display_user_metadata':
return menu_processor.person_metadata()
if menu_name == 'exit_invalid_menu_option':
return menu_processor.exit_invalid_menu_option()
if menu_name == 'exit_pin_blocked':
return menu_processor.exit_pin_blocked()
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if menu_name == 'exit_successful_token_selection':
return menu_processor.exit_successful_token_selection()
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preferred_language = get_cached_preferred_language(account.blockchain_address)
return translation_for(display_key, preferred_language)